274 plies 154 stones
but there is more possible

playstrategy.org/study/DIw8nc04

1

Hi @woll we'll accept your submission of:
274 plies 154 stones in post #11.

We do ask for users not to edit posts for study challenges, as the study that is linked can always be changed, and so someone could just copy the best study into an earlier forum post to claim the challenge win by the final tiebreaker (Earliest Entry).

In this case its clear you aren't trying to do that, and so we'll allow this submission at the values quoted above.

playstrategy.org/study/sKeXvQ8C
177 ply
155 stones

playstrategy.org/study/sKeXvQ8C
277 plies
155 stones
(I said the wrong number of stones in my last post)

Not wrong number of stones, wrong number of moves. sorry.